Air Exchange Mechanism in 3-D Complex Array

0480559 - ÚT 2018 IT eng C - Konferenční příspěvek (zahraniční konf.)
Jurčáková, Klára - Nosek, Štěpán - Kluková, Zuzana - Kellnerová, Radka - Jaňour, Zbyněk
Air Exchange Mechanism in 3-D Complex Array.
18th Internacional Conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes. Bologna: CNR Research Area, Bologna Italy, 2017, s. 525-529.
[Internacional Conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes /18./. Bologna (IT), 09.10.2017-12.10.2017]
Grant CEP: GA ČR GA15-18964S
Institucionální podpora: RVO:61388998
Klíčová slova: wind tunnel * street canyon * pollution flux measurement
Kód oboru RIV: DG - Vědy o atmosféře, meteorologie
http://www.harmo.org/conferences/Proceedings/_Bologna/publishedSections/H18-105-Jurcakova.pdf

In this paper, a wind-tunnel study on dispersion of a tracer gas emitted from a ground-level line source positioned within complex obstacle arrays is presented. The models consisted of courtyard buildings blocks with pitched roofs and of uniform and non-uniform heights. Tracer exchange between the street canyon cavities and surrounding flow was studied by simultaneous point measurement of flow and tracer concentration. While there was found a significant impact of the roof-height variability on the tracer exchange rate from the canyon in the case of wind approaching perpendicularly to the along-canyon axis, in the case of the oblique wind the impact was insignificant.

Trvalý link: http://hdl.handle.net/11104/0279391